Here’s Why So Many People Have Heart Attacks at the Gym

When Don Stenta turned 50 last January, he decided to start working out more and train for a half-marathon. As director of Student Life Recreational Sports for Ohio State University, Stenta oversees six fitness and recreation centers on campus, and began going for regular runs on the school’s indoor track.

One day after a run, Stenta collapsed—and woke up later in the hospital.